content: /**
   * Copyright (c) 2012, Andy Janata
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without modification, are permitted
   * provided that the following conditions are met:
   * 
   * * Redistributions of source code must retain the above copyright notice, this list of conditions
   *   and the following disclaimer.
   * * Redistributions in binary form must reproduce the above copyright notice, this list of
   *   conditions and the following disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
   * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package net.socialgamer.cah;
  
  import org.json.simple.JSONObject;
  import org.json.simple.JSONValue;
  
  
  /**
   * Wrap around an {@code JSONObject}, to allow parameters to be retrieved by enum value.
   * 
   * @author Gavin Lambert (uecasm)
   */
  public class JsonWrapper {
    private final JSONObject json;
  
    /**
     * Create a new JsonWrapper.
     * 
     * @param json
     *          The JSON text to parse.
     */
    public JsonWrapper(final String json) {
      this.json = (JSONObject) JSONValue.parse(json);
    }
  
    /**
     * Returns the value of a property as an Object, or null if the property does not exist.
     * 
     * @param key
     *          Property to get (should be one of the defined Constants).
     * @return Value of the property, or null if property does not exist.
     */
    public Object getValue(final Object key) {
      return json.get(key.toString());
    }
  
    /**
     * Returns the value of a property as a String, or the default if the parameter does not exist.
     * 
     * @param parameter
     *          Parameter to get.
     * @param defaultValue
     *          The value to return if the parameter does not exist.
     * @return Value of parameter, or the default if parameter does not exist.
     */
    public String getString(final Object key, final String defaultValue) {
      final Object value = getValue(key);
      return (value == null) ? defaultValue : value.toString();
    }
  
    /**
     * Returns the value of a property as an integer, or the default if the parameter does not exist.
     * 
     * @param parameter
     *          Parameter to get.
     * @param defaultValue
     *          The value to return if the parameter does not exist.
     * @return Value of parameter, or the default if parameter does not exist.
     */
    public int getInteger(final Object key, final int defaultValue) {
      final Object value = getValue(key);
      if (value instanceof Number) {
        return ((Number) value).intValue();
      }
      return (value == null) ? defaultValue : Integer.parseInt(value.toString());
    }
  
    /**
     * Returns the value of a property as a boolean, or the default if the parameter does not exist.
     * 
     * @param parameter
     *          Parameter to get.
     * @param defaultValue
     *          The value to return if the parameter does not exist.
     * @return Value of parameter, or the default if parameter does not exist.
     */
    public boolean getBoolean(final Object key, final boolean defaultValue) {
      final Object value = getValue(key);
      if (value instanceof Boolean) {
        return (Boolean) value;
      }
      return (value == null) ? defaultValue : Boolean.parseBoolean(value.toString());
    }
  }
  